The lesion at the base of the keratin mound is benign in the majority of cases. Malignancy is present in up to 20% of cases, with squamous cell carcinoma being the most common type. The incidence of squamous cell carcinoma increases to 33% when the cutaneous horn is present on the penis.alignancy is present in up to 20% of cases, with squamous cell carcinoma being the most common type. The incidence of squamous cell carcinoma increases to 33% when the cutaneous horn is present on the penis.
For example, the average human gestation period is 38 weeks. Gestation may normally last anywhere from 37 to 42 weeks, however, and be considered well within the healthy range. Any child born before 37 weeks is considered preterm, and this can be accompanied by any number of health risks.
The interval of gestation period in humans is estimated to be around 40 weeks or 280 days. Gestation period in humans may normally last from 37 to 42 weeks or between 259 and 294 days. That means that in average pregnancy the birth occurs during this period of time.